stringerless board questions

i am thinking about going out to home depot and getting some eps insulation to make my first board. what weight should i get? since there isn’t a stringer will the board be all right or will it have indents? how should i go about making it since it doesnt have a stringer? make it thicker? i was thinking of a twin fin retro fish… let me know hat you guys think. also, do you think i should try to make a different board for my first board or will a retro fish not be too confusing of challenging? thanks, novasurfer

Read the Project Frog thread – you’ll be glad you did!